Go需要逗号，放在那里会抛出其他不相关的错误

Question

我正在尝试使用 this 在 Golang 中创建一个 reddit 机器人库，Golang 要求一个逗号，但是，当我把它放在那里时，Go 会抛出其他错误。

这是我的 main.go:

package main

import (
  "github.com/turnage/graw/reddit"
)

func main() {
  cfg := BotConfig{
    Agent: "graw:doc_demo_bot:0.3.1 by /u/yourusername",
    // Your registered app info from following:
    // https://github.com/reddit/reddit/wiki/OAuth2
    App: App{
      ID:     "sdf09ofnsdf",
      Secret: "skldjnfksjdnf",
      Username: "yourbotusername",
      Password: "yourbotspassword",
    }
  }
  bot, _ := NewBot(cfg)
  bot.SendMessage("roxven", "Thanks for making this Reddit API!", "It's ok.")
}

这是上面代码的输出(17:7 处没有逗号):

# command-line-arguments
./main.go:17:6: syntax error: unexpected newline, expecting comma or }

这是我将逗号放在那里时的输出:

# command-line-arguments
./main.go:4:3: imported and not used: "github.com/turnage/graw/reddit"
./main.go:8:10: undefined: BotConfig
./main.go:19:13: undefined: NewBot

我也试过在第 16 行后加一个逗号(这样就有两行)，但我得到了这个错误:

# command-line-arguments
./main.go:16:36: syntax error: unexpected comma, expecting expression
./main.go:17:6: syntax error: unexpected newline, expecting comma or }

我不确定我做错了什么。

Answer 1

您的错误(在通过添加逗号修复语法问题之后)都是相互关联的。正如所写，您没有使用您导入的包。使用 reddit.BotConfig、reddit.App 和 reddit.NewBot 使用该包中的结构和函数。在 Go 中导入不会将事物带入全局顶级命名空间。

func main() {
    cfg := reddit.BotConfig{
        Agent: "graw:doc_demo_bot:0.3.1 by /u/yourusername",
        // Your registered app info from following:
        // https://github.com/reddit/reddit/wiki/OAuth2
        App: reddit.App{
            ID:       "sdf09ofnsdf",
            Secret:   "skldjnfksjdnf",
            Username: "yourbotusername",
            Password: "yourbotspassword",
        },
    }
    bot, _ := reddit.NewBot(cfg)
    bot.SendMessage("roxven", "Thanks for making this Reddit API!", "It's ok.")
}